Matthew 18:5-6

Whoever receives and welcomes one child like this in My name receives Me; but whoever causes one of these little ones who believe in Me to stumble and sin [by leading him away from My teaching], it would be better for him to have a heavy millstone [as large as one turned by a donkey] hung around his neck and to be drowned in the depth of the sea. [Mark 9:42; Luke 17:2]